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Rh wholly pay their taxes from what they would have saved, but partly, if not chiefly, from what they would have spent. It may be added, that any increase in the productive power of capital (or, more properly speaking, of labour) by improvements in the arts of life, or otherwise, tends to increase the employment for labour; since, when there is a greater produce altogether, it is always probable that some portion of the increase will be saved and converted into capital; especially when the increased returns to productive industry hold out an additional temptation to the conversion of funds from an unproductive destination to a productive.

§ 3.While, on the one hand, industry is limited by capital, so on the other, every increase of capital gives, or is capable of giving, additional employment to industry; and this without assignable limit. I do not mean to deny that the capital, or part of it, may be so employed as not to support labourers, being fixed in machinery, buildings, improvement of land, and the like. In any large increase of capital a considerable portion will generally be thus employed, and will only co-operate with labourers, not maintain them. What I do intend to assert is, that the portion which is destined to their maintenance, may (supposing no alteration in anything else) be indefinitely increased, without creating an impossibility of finding them employment: in other words, that if there are human beings capable of work, and food to feed them, they may always be employed in producing something. This proposition requires to be somewhat dwelt upon, being one of those which it is exceedingly easy to assent to when presented in general terms, but somewhat difficult to keep fast hold of, in the crowd and confusion of the actual facts of society. It is also very much opposed to common doctrines. There is not an opinion more general among mankind than this, that the unproductive expenditure of the rich is necessary to the employment of the poor. Before Adam Smith, the doctrine